n the Middle Ages the knight was the ultimate warrior. In his suit of armor, on his spirited horse, he could overcome any resistance-as in the eleventh century, when it took only seventy knights to conquer the entire civilized kingdom of Sicily! Today the movements of medieval warriors are preserved in the moves of pieces on a chessboard; and by going back to the life and times of the Middle Ages, Harvey Kidder is able to explain the game of chess in an uncommonly exciting way.